商鋪名稱:河北會泉泵業有限公司
聯系人:徐經理(先生)
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企業郵箱:1815991877@qq.com
聯系地址:河北省石家莊市橋西
郵編:5000
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農業灌溉泵A蕪湖農業灌溉泵安裝
And try to shorten the length of the suction pipe. Secondly, the inlet pipe should be sealed and reliable. Bottom valve and glue pipe safety rope fastened. Water source for the channel, the bottom valve should be higher than 0.5 meters below the bottom, and add mesh to prevent debris into the pump. The third is that when the machine pump belt drive, the tight edge of the belt should be under, in order to improve the transmission efficiency. The pump impeller steering should be consistent with the direction of the arrow. The shape and structure of the guide vane mixed-flow pump are near the axial flow pump. Check the pump should pay attention to three points: (1) pump shaft should be able to rotate flexibly, no impact sound, pump shaft radial no obvious shaking, need to add sufficient lubricating oil. (2) Check the water inlet hose has no breakage, if there is cracking to timely adhesion repair. Check that the fastening bolts are loose and tighten the loose bolts. (3) Submersible pump motor winding, cable insulation must meet the requirements, in order to use. Troubleshooting methods: (1) do not absorb water or no effluent, mostly because the bottom valve is stuck, the filter water part is silted; the height of the suction water is too high or the suction pipe leaks;
*技術參數
(2)改變轉速的方法:改變皮帶輪外徑或改變齒輪減速器傳動比,也可選用不同轉速的動力機。jdhuiquan717
(3)水泵轉速改變后,其流量(Q)、揚程(H)和功率(N)的變化關系如下式所示: Q1=Q*n1/n H1=H*(n1/n)2 N1=N*(n1/n)3
式中:Q1、H1、N.分別代表轉速改變后的流量、揚程和功率。 Q、H、N分別代表規定轉速下的流量、揚程和功率。
(4)水泵轉速提高后,耗用功率增加,吸上真空度降低,壽命縮短。過分提高轉速會發生其它事故,故應慎用。
(5)水泵轉速過分降低時,泵的使用效益低,為此,應盡量避免泵在過低轉速下運行。用戶應按性能曲線圖選擇使用。
農業灌溉泵A蕪湖農業灌溉泵安裝
It is usually required to install bottom valves in suction pipes to be satisfied with the need to start irrigation. Bottom oh of the hydraulic loss is relatively large, will add the actual working head of the pump, increase the cost of electricity. Together, the bottom valve is also prone to the phenomenon of being stuck. In the use of mixed-flow pumps in our county, A new method of self-suction vacuum with S-shaped water pipe is used instead of bottom valve irrigation. After a long period of practice, the role is good, which is described below. Fig. 1 is a schematic diagram of a device for self-priming vacuum of a 14HB 140 mixed-flow pump without a bottom valve. The inlet pipe consists of two or three bends to form an Application of self-priming vacuum for mixed-flow pump bottomless valve. When the device elevation of the pump is higher than the water level of the inlet pool, water can be persisted in the pump. When first started. S type double suction in the open pump more than 13 major problems: The pump can not start or start a large load, pump does not discharge fluid, pump discharge after the stop, lack of flow, the head is not good, the operation of large consumption, pump oscillation or abnormal movement.
2、允許吸上真空度[Hs]與必需汽蝕余量[NPSH]r的換算關系:
[Hs]≈10-[HPSH]c
[NPSH]r≈[NPSH]C+0.3
式中:[Hs]-允許吸上真空度 米
[NPSH]C-臨界汽蝕余量 米
[NPSH]r-必需汽蝕余量 米
*特征描述
HW 型蝸殼式混流泵是按國家標準系列而設計的高節能產品。其性能指標均達到先進水平,省材節能效果顯著。延伸搜索:水環真空泵
(一)用途
HW型混流泵為臥式、單級、單吸、懸臂蝸殼式混流泵,適用于農田排灌、工業、城鎮給排水及船塢、碼頭引水等。延伸搜索:水環真空泵
(二)特點
體積小、重量輕、流量大、效率高,汽蝕性能好,區范圍寬廣而平坦,結構簡單,使用管理方法,維修容易。延伸搜索:水環真空泵
(三)型號說明
以250HW—8為例:
250—泵進(出)水口直徑為250毫米。
8—泵總揚長為8米。
(四)水泵的傳動方式
我廠生產的HW型系列混流泵均機(電)兩用,其轉動方式視各地區動力情況而定,訂貨時根據原動機的型號(功率、轉速)確定水泵的傳動方式,以定皮帶輪的大小或聯軸器的規格。延伸搜索:水環真空泵
(五)水泵轉向:
從水泵進水口看葉輪為逆時針方向旋轉(即箭頭所示的方向旋轉)。
農業灌溉泵A蕪湖農業灌溉泵安裝
Ma On Shan did a very good job, in order to meet the arrival of the flood season, Ma On Shan Municipal department to fully spread the 36 pumping station 145 pumps inspection and maintenance work, in order to ensure that the drainage equipment facilities in the flood season can be normal operation, for this year's safety flood to lay a solid foundation. In early October last year, maintenance personnel began
使用說明
(一)HW型混流泵由泵體、泵蓋、葉輪、泵軸和軸承體等主要零件構成。
(二)泵蓋是泵與進水管相連的零件,其端面與葉輪之間留有規定的軸向端面間隙(在消除軸承軸向活 動間隙以后,保持規定的軸向間隙)。間隙過小產生摩擦,過大則會導致泵內壓力水回流,使泵的效率降低,通過增減調整紙墊達到規定的要求的間隙。延伸搜索:水環真空泵
(三)密封裝置是由填料函、水封函、填料壓蓋和鉛粉(或油浸)石棉盤根組成。其作用有:
1、荼時防止空氣吸入泵內,起密封作用。
2、抽水時防止水從泵內過多的沿軸大量流出。
(四)軸套用來保護軸不使它與填料直接摩擦,若長期使用中發現軸套磨損過多,可換軸套。
(五)水泵軸的兩個支承是軸承體內的軸承,軸承體內存有適量潤滑脂以潤滑軸承。
(六)軸上的擋水圈可防止水沿泵流入軸承體內,從而保護軸承,延長使用壽命。
用途/應用領域
混流泵混流泵是一種比轉速較高的泵型,廣泛應用于農田灌溉,防澇排洪,污水處理,電站冷卻系統等領域.在大流量,低揚程的應用場合下,軸流泵揚程,流量變化范圍小,區窄,抗汽蝕性能差,使用混流泵代替軸流泵,能夠在發揮軸流泵優點的基礎上補償這些缺點,從而取得更好的使用效果.
高比轉速混流泵的設計方法
軸面流動計算
采用流線迭代法求解軸面流動.流線迭代法基于沿任意準正交線的軸面速度梯度方程和流體運動的連續方程,根據各子流道流量相等的原則,迭代求解沿準正交線的軸面速度梯度方程即可得到軸面流網.通過流線迭代法,在確定軸面流道輪廓之后,可以通過所需時間很短的迭代計算過程得到的軸面流網.圖1是流網所對應的軸面速度沿軸面流線的分布圖.
的關于生態文明制度建設的闡述,具有深刻的理論性,鮮明的思想性和現實的針對性,深刻反映了以同志為的著眼維護廣大人民根本利益,維護中華民族的長久利益,致力于生態文明建設的決心。廣東是改革開放的先行省和前沿陣地,肩負著實現“三個定位,兩個率先”目標的重任,要深刻理解生態文明制度建設的豐富內涵,充分認識環境保護在生態文明建設中的主陣地作用,加快推進環保體制改革,爭當生態文明制度建設排頭兵。所謂的用戶,就是用戶需求的一個完整的,里面包含眾多環節,每個環節都有相對應環節的用戶。對于大多數無尾挖掘機操作者來說,挖掘機的是個著實讓人的難題。監護、超聲、注射器、真空采血管等器械的注冊證均在100張以上。據統計,寧波市區主要有現代商城、輕紡城、華生燈飾城、恒大建材市場等,新開的華生燈飾城和恒大建材市場其生意都很一般,商家入駐率也不高。隨著高鐵、動車、地鐵的不斷延伸,鐵路工程不斷的開工,這為工程機械設備帶來的需求。